Slate-roofing



(No Model.) I V i I HLD. OORDRAY. Slate Roofing. No. 242,510. Patentedlune 7,1881.

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N. PETERS. Phom-L|lhngmphun Washington. 0.6.

Nrrnn STATES PATENT OFFICE.

HENRY D. GORDRAY, OF NEWARK, OHIO.

SLATE-ROOFING.

SPECIFICATION forming part of Letters Patent No. 242,510, dated June *7,1881.

Application filed April 6, 1881. (No model.)

To all whom it may concern:

Be it known that I, HENRY D. CORDRAY, a citizen of the United States,residing at Newark, in the county of Licking and State of Ohio, haveinvented certain new and useful Improvements in Slate-Roofing; and I dohereby dedeclare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters or figures of referencemarked thereon, which form a part of this specification.

The present invention has reference to that class of slate-roofin g inwhich rectangular slates are laid in oblique courses. In this style ofroofing, as heretofore known, the slates present inclined courses onlyafter having been laid, because they are put down transversely or acrossthe root, so as to cause every slate of a transverse row to overlap twoslates of a next preceding row.

The above system of laying slates is defective, because the ordinaryroofing or sheathing boards cannot be dispensed with,the same beingnecessary for enabling the slates to be properly supported and secured.The slates, moreover, cannot be laid and secured with the same facilityand dispatch as in the case where they are laid down in oblique courses,running from the eaves to the ridge-pole, or vice versa.

My invention is designed to. carry out the last-mentioned system oflaying slates; and it consists in the construction oftheroofframe, andmanner of laying and securing the slates,

hereinafter described and claimed.

In the drawings, Figure l is a face view of a slate roof, one of thecourses being left off to show the manner of securing the slates tooblique or diagonal stringers or laths of the roof-frame, and anotherslate broken away to show thecementbedonwhich theslates arelaid. Fig.2is a section taken diagonally through one of the oblique courses ofslates and frame havin g oblique stringers for supporting the slates.Fig. 3 is across-section taken through the line as w of Fig. 1.

The frame A of the roof is of any preferred form, and has the diagonalor oblique stringers or laths B secured thereto. These stringers areused without the sheathing-boards present in ordinary roofs forsupporting the slates.

In the present instance slates G, of a rectangular form, are laid inoblique courses from the caves to the ridge pole of the roof. Theseslates rest directly upon the diagonal stringers, and are securedthereto by means of screws or nails D and a cement or plaster bed, E,applied to the diagonal stringers.

The first course of slates is laid down, commencing at one of the lowercorners of the roof-frame, the upper edges of the slates of this coursebeing secured to the first diagonal stringer in the manner alreadystated, and then covered by the overlapping edges of the slates of thenext succeeding course. It will thus be perceived that each diagonalstringer supports the edges of two courses of slates, and by securingthe latter by screws and cement or plaster, as already stated, no intermediate support is required for the slates. The second course havingbeen laid, the upper edges of the slates of this course are secured tothe second diagonal stringer, and then the third course of slates islaid, and so on until theentire roof-frame is covered.

It will be manifest that the slates adjoining the eaves, sides, andridge of a square roof must be cut or otherwise shaped so as not toproject beyond the same.

The system of laying slates above described is very simple andeffective, and a larger area of the slates is exposed than it the slateswere laid down in transverse rows.

I am aware that roofing-slates have heretofore been laid in cement orplaster; but they have not, up to the date of my invention, beenembedded in plastic cement laid on diagonal stringers of a roof-frame.This manner of applying the cement, together with an additional coatingof cement placed between the overlapping and underlapping ends of eachpair of slates of the same course, as is shown in Fig.2, will form aneffectual and weather-tight secure joint, so as to prevent the admissionof air or water under the slates.

What I claim as my invention, and desire to secure by Letters Patent,is-

The roof-frame having diagonal stringers or supportingbars, and therectangular slates laid in diagonal courses and secured to said diagonalstringers, as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY D. CORDRAY.

WVrtnesses:

GEO. M. GRASSER, G. DOUGLAS GRASSER.

